Concrete-placing apparatus



Jan. 14, 1930. E, '6, CARR 1,743,114

CONCRETE PLACING APPARATUS MWMMMW/WMW,

/1 TTORNEYS.

Jam 14, 1930. E. G. CARR CONCRETE PLACING APPARATUS Fiiea June 11. 192s 2 Sheets-Sheet 2 N u? j/ENTOR. By m, M,

ATTORNEYS.

APatented Jan. 14, 1930 UNITED STATES .EDWARD G. CARR, OF CHICAGO, ILLIOIS, ASSIGNOR T THE LAKEWOOD ENG-WEER- ING COMPANY, OF LAKEWOOD, OHIO, A CORPORATION OF OHIO `CON'GRE'.l'.'E.1?1211401121113! APPARATUS Application filed June 11,

rlhis invention relates to concrete placing apparatus and the object of the invention is to improve the construction and operation of concrete placing` apparatus in the manner to be hereinafter described and claimed.

Referring to the drawings which accompany this specication and form a part hereof, which drawings illustrate an embodiment of this invention, and on which drawings the same reference characters are used to designate the same parts wherever they may appear in each of the several views, Fig. 1 is a plan view of the apparatus, all parts which are not necessary to a complete understanding of the invention being omitted to avoid confusion; Fig. 2 is a front elevation of the apparatus, parts being omitted; Fig. 3 is a vertical, longitudinal section of the apparatus on the line 3-3 on Fig. 1, looking in the direction indicated by the arrows; Fig. 4 is an elevation of parts shown by Fig. 3, parts being broken away, and some parts being shown in diierent positions from the positions in which they are shown by Fig. 3; Fig. 5 is a. section taken on the line 5-5 on' Fig. 4, looking in the direction indicated by the arrows; and Fig. 6 illustrates a yconnection of the loose pivot type.

Referring to the drawings, the reference 3o numeral 1 designates a frame which is illustrated by the drawings as composed of side members 2 and 3 and a vertically adjustable, transverse bridge member 4. The side members 2 and 3 may be constructed in any suitable manner and are illust-ratedas provided with vertical guides 5 and 6 forming parts of their frame constructions. The side member 2 is provided with wheels 7 and 8 and the side member 3 is provided with wheels 4o 9 and 10. The bridge member 4 is composed of a front, vertical truss 11 and a rear, vertical truss 12 composed of top and bottom chords and uprights and diagonals in a manner to be described. The top chord 13 ot the front truss 11 is composed of two angle irons 14 `and 15 and the bottom chord 16 of the front truss 11 is also composed of two angle irons 17 and 18. The two angle irons forming each of these two chords are faced in opposite directions, as clearly shown 1923. Serial No. 644,569.

by Fig. 3 of the drawings. The top vchord 19 and the bottom chord 20 of the rear truss 12 are single angle irons. The top and bottom chords of the front truss 11 are connected at their ends with slides 21 which engage with the vguides 5 of the side members 2 and 3, and the top and bottom chords of the rear truss 12 are connected at their ends with slides 22 which engage with the guides 6 of the side members 2 and 3. The slides 21 and 22 are provided with screws 23, 24, 25, and 26 by means of which the slides 21 and 22 can be raised or lowered with respect to the side members 2 and 3. Any one of' these screws can be turned by applying a wrench to its upper squared vend and each screw is provided with a sprocket wheel. A sprocket chain 27 connects the sprocket wheels on the screws 23 and 24, and a sprocket chain 28 connects the sprocket wheels on the screws 25 and 26. These sprocket wheels are designated by the reference numerals 29, 30, 31, and 32, and it will be obvious that if any one screw be turned, the other screw, at the same end of the bridge member 4. will also lbe turned so that the bridge member 4 cannot be subjected to racking strains. The connections of the chords with the slides are not rigid connections but are of the loose pivot type with enough play to permit of warping the bridge memberI 4 in the manner to be hereinafter described. The bottom chords of the bridge member 4 support a framework 33 for the motor 34 and other parts. The front and rear trusses are illustrated by the drawings as odd number of panel trusses, seven panels being illustrated,

`the rear truss being the same as the front truss in the particulars of construction now to be described. Referring to Fig. 2 of the drawings and the front truss 11 illustrated thereby, the truss is composed of seven panels 35, 36, 37, 38, 39, 40, and 41, determined by the slides 21 and the verticals 42, 43, 44, 45, 46, and 47. The central. panel 38 is a rigid panel with the 95 immovable, crossed diagonal braces 48 and 49. The panels 35, 36, and 37 are iiexible panels with single diagonal braces 50, 51, and 52 all inclined in the same direction, and the panels 39,40, and 41 are flexible panels with single 100 f sufficiently braced diagonal braces 53, 54, and 55 all inclined in the same direction but thev direction of inclination being opposite tothe direction of inclination of the braces 50, 51, and 52. The braces 50,51, 52, 53, 54, and 55 are made in two parts and are provided with turnbuckles 56 so that their lengths can be diminished or increased. The verticals 42, 43, 46, and 47 are not rigidly connected with the top and bottom chords but are loosely pivoted thereto to permit of a small amount of play, and it will bejobvious that by decreasing the lengths of the braces 50, 51, 52, 53, 54, and 55, by means of the turnbuckles 56, the front and rear trusses, which are similarly constructed in these respects, can be warped or bent in vertical planes so as to present concavities downward corresponding to the crown of a road, and that, by increasing the lengths of the said braces, the trusses can be made straight. The top chords of both trusses and the bottom chords of both trusses are connected by longi tudinal and diagonal members forming panel constructions equal in number to the panels of the front truss and the rear truss. One of the longitudinal members connecting the top chords of the trusses is shown by Fig. 3 of the drawings and is designated by the reference numeral 57. All panels of the top and bottom lattice work, except the ones corresponding in position with the panels 38 of the front and rear trusses, may be braced with immovable,Y crossed diagonal braces. f The bottom panel corresponding with panel 38 'is by the framework 33 for supporting the motor 34 and other parts, and

the corresponding top panel may be provided with any suitable system of removable bracing so that the motor 34 and other mechanism may be readily placed in position, or removed, and easy access had thereto.

A channel iron 58 is secured to the front truss 11 to serve as a track for the wheels 59 of a bucket 60. The channel iron 58 is firmly supported by the members of the front truss 11 but the supporting connections permits suflicient play so that the channel -iron or track 58 will warp to the same curvature in a vertical plane as the front and rear trusses 11 and 12. There are preferably two wheels 59 to` support the bucket 60 and antitilting wheels 61 run between the angle irons 14 and 15 and similar antitilting wheels 62 run between the angle irons 17 and 18. The antitilting wheels 61 are slightly less in diameter than the distance between the upstanding parts of the angle irons 14 and 15, and the antitilting wheels 62 are slightly less in di-A ameter than the distance between the upstanding parts of the angle irons 17 and 18, to avoid friction, and these antitilting wheels are supported slightly above the horizontal parts of the angle irons 14, 15, 17 and 18, to avoid friction, as will be obvious from an inspection of Fig. 3 of the drawings,

The motor 34 can rotate a shaft 63 by means y 'on the shaft 63 so as to rotate therewith,

while being free to b e moved longitudinally thereof, and ca n be moved by the lever 72, rock shaft 73, crank 74, rod 75, and shifting lever 76, to clutch either the bevel gear 69 or the bevel gear 70 to the shaft 63, or to leave both of said bevel gears unclutched from the shaft 63. A bevel gear 77 and a drum 78 are fast onv a shaft 79. A. cable 80 is wound around the drum 78 and leads around sheaves 81 and 82, which are secured to the opposite ends of the bridge member 4, to the bucket 60, to traverse the bucket 60 in either direction along the bridge member 4. The bucket 60 has spreading plates 83 and 84 at its ends and its bottom is composed of two hinged fiaps 85 'and-86 which are separately connected by links 87 and 88 with a cable 89. 'The cable 89 passes over sheaves 90 and 91, which are secured to the ends of a bucket 60 and around two sheaves 92 and 93. The sheave 92 is secured l to the side member 3 and the sheave 93 is secured to a lever 94 which is pivoted to the side member 2. A sector 95, provided with a plurality of notches, is secured to the side member 2 and the lever 94 is provided with. a. pawl'96 adapted to engage a notch in said sector. The pawl 96 can'be manipulated by a hand grip 97. The distance between the pivot 98 for the lever 94 and the point of attachment, or pivot 99, of the sheave 93 to the lever 94 should, of course, be sufficient for full opening of the flaps y85 and 86 which form the bottom of the bucket 60. The sector need only be long enough to take up stretch in the cable 89, or, if the cable 89 should have no appreciable stretch, to accommodate ,for different lengths of the cable 89 for various vertical positions of the bridge member 4. The iiaps 85 and 86 are provided with lugs 1.00 to engage within hooks 101 on the spreading plates 83 and 84, when the flaps are in their opened positions. The hinge members 102, which are secured to the bucket 60, serve as bearings for hinge pins 103 to which the hinge members 104, which are secured to the flaps 85 and 86, are rigidly secured. Stops 105 on the hinge members 104 limit the opening of the flaps 85 and 86 and take the strain of spread-V dthrough which the hinge pins 103 pass and the hinge pins 103 are provided with the cranks or fingers 106 to engage with projections 107 on the spreading plates 83 and 84 to lift the spreading plates when the flaps 85 and 86y are lifted to closed positions, and to lower-the spreading plates 83 and 84 when the flaps 85 and 86 are opened. Thus, it will be seen, the

spreading plates 83 and 84 are always elevated when .the flaps 85 and 86 are closed so The' gear 68 meshes With a reversing gear 110,

on a shaft 111and the reversing gear' 110 meshes with a gear 112 which is loose: on the' shaft 1'09 but which is restrained from longitudinal movements with respect thereto.

clutch 113 is secured to the shaft 109 so as to rotate therewith While being free to be moved longitudinally thereof, and it can be movedy by the lever 114, rock shaft 115, crank 116, rod 117, and shiftinglever 118, to clutch either the gear 108 or the gear 112 to the shaft 109, or to leave both o f said gears 108 and 112 unclutched from the shaft 109. 'Ihe wheels 7 and- 9 have aXles 119 and 120 to which the Wheels are rigidly secured, and the shaft 109 is connected with said aXles by shafts 121 and 122 and universal couplings 123 which are of an ordinary construction and which compel rotation but permit of sufficient longitudinal movements of shafts to accommodate the different angular inclinations required. The wheels 7, 8, 9, and 10 are provided with bevel gears 124 and the side members 2 and 3 are provided with shafts 125 and 126, provided with bevel gears 127 and 128, to gear wheels 7 and 8 together, and 129 and 130, to gear wheels 9 and 10 together.

The apparatus is illustrated bythe drawings as supported upon forms or rails 131 and 132 such as are used in construct-ing concrete roads, and the apparatus can be used With great advantage in spreading concrete for the construction of roads or similar purposes.

The operation of the apparatus is obvious from the foregoing description. The bucket is positively guided to conform to the crown of a road and the flaps 85 and 86 and the spreading plates 83 and 84 positively spread with reference to the forms 131 and 132 when lowered to spreading positions.

`What is claimed is:

1. The combination with a movable bucket, of adjustable meansv for supporting the bucket, the bucket being provided with bottom flaps, and vertically movable spreading plates associated with said bottom flaps'.

2. In concrete placing apparatus, the comhina-tion with a track, of means for warping the track, a bucket supported by the track, hinged flaps forming a bottom for the bucket and swinging down to open and up to close,

and spreading plates movable down and up With said flaps.

3. In concrete placing apparatus, the combination of side members, wheels supporting said side members, a bridge member connected with said side members and vertically adjustable with respect thereto, means for warping said bridge member in a vertical direction, a bucket supported by said bridge member, means for traversing said bucket with respect to said bridge member, means for propelling the apparatus, vertically movable bottom members and spreading plates associated with said bucket and provided with means adapted to interlock when the bottom;

members are in their opened positions,'a cable running over pulleys for moving said bottom members and spreading plates, one of A the said pulleys being connected to a lever,

and means to retain said lever in a predete'rmined position.

4. rI`he combination with a bucket,.0f La movable bottom therefor, a spreading plate associated at substantially aright angle with v said movable bottom, and means to engage said spreading plate and move it vertically during closing movements ofsaid bottom.

5. The 'combination with a bucket, of fla formin a bottom, spreadingplates at su;

stantiay right angles with said flaps, means to open and close said flaps, and means to engage said spreading plates and move them ertically during closing movements of said aps. y

6. In combination, a frame adapted to be supported by and to travel on-the side forms of a roadway, a receptacle for road material movably supported by said frame to travel thereon transversely of the roadway and having means to discharge the material therefrom, and means movable on` said frame transversely of the roadway correspondingly to the movements of the receptacle thereon to spread the material substantially simultaneously with its discharge Yfrom said receptacle.

7. In combination, a frame adapted to be supported by and to travel on vthe side forms of a roadway, a receptacle for road material movably'supported by said frame to travel lthereon transversely of the roadway and'having means to discharge the material therefrom, and means movable on said frame transversely of the roadway correspondingly to the movements of the receptacle thereonto spread the material to a predetermined height with respect to the side forms substantially simultaneously with its discharge from said receptacle.

8. In cdmbination, a frame adapted to be supported by and to travel on the side forms of a roadway, ported by said frame to travel thereon transversely of the roadway, said receptacle having spreading means carried thereby to spread and a receptacle movably supconcrete discharged therefrom to a predetermined height With respect to the forms as the receptacle moves on said frame transversely of the roadway.

9. In combination, a frame adapted to be supported by and to travel on the side forms of a roadway, and a receptacle movably supported by said frame to travel thereon transversely of the roadway, said receptacle having spreading means carried thereby to spread concrete discharged therefrom to variable predetermined heights with respect to the forms vas the receptacle moves on said frame transversely of the roadway.`

In Witness whereof I hereunto affix my signature. l

EDWARD GJCARR. 

